Enlarging-lantern or projectoscope.



-r W-;,MINOR.' ENLARGNG LANTERN OR PROJEGTOSCOPE 1&1569 v MPLliIATIONFILED AUG. 15, I914- 2 SHEETS-SHEET 1.

F. w. MINOR. EN LARGINQ. LANTERN 0R PROJECTOSCQPE.

APPLICH'ION FILED AUG-15. 1914 Patented Am. 20, 1915.

2 SHEETSSH-EET 2.

Fen an-"w. union, or nronnonn, VIRGINIA.

ENLARGING-LANTERN R PROJECTOSCOPE.

1,135,697. i I I. Specification of Letters'Patent. I Patgntd A- j2G,,1Q15? .Applicationfiled August 15, 1914. Serial No. ssa ssa. I. i j7 I :endto strike against yoke and properly position the tubes when theplate 8 is slid beneath the guides. U I j A lamp 12 is carried by a"head 13'which' so To all whom it may concern Be it known that I, FRANKW. MINQk.;-0f Richmond, in the county of Henrico, and in the State ofVirginia, have invented a certain new and useful Improvement inEnlarging-Lanterns orProjectoscopes, and do hereby declare that thefollowing is a full, clear,'and exact description thereof.

The object of my invention has been to provide a lantern for use inenlarging and projecting which shall have, among others, the advantagesof being simple, compact, cheap and convenient, and to such ends myinvention consists in the enlarging lantern or projectoscope hereinafterspecified.

In the accompanying drawings, Figure l is a. side elevation of a lanternembodying my invention; Fig. 2 is a vertical, longitudinal, sectionalview through the axis of .the lantern shown in Fig. 1; Figs. 3, 4 and 5are detail views of the lamp mounting at the rear of the lantern; and,Fig.6 is a front view of a lantern.

While I have illustrated in the drawings that embodiment of my inventionwhich is the best embodiment known to me,'such embodiment is to beregarded as typical only of many possible embodiments, and my in:vention is not to be restricted thereto.

, In the illustrated embodiment I have provided a base plate 1 uponwhich is mounted a saddle 2 adapted to sustain the rear portion of thelantern, comprising telescopic tubes 3 and 4;, the tube 3 containing thecondensing lenses, and the tube 4 carrying the lamp hereafter to bedescribed. The saddle is preferably removably secured to the base bydowel pins. A yoke 5 stands normally between the condenser tube 3- andthe front ortion of the lantern having the projecting enses, and suchyoke-is adapted to receive the frame 6 in which the slide, negative'orother object 7 to be prbjected is carried. The yoke is preferably openat the top so that the slide frame can be inserted from above as wellas. from the sides; The said yoke is preferably removably mountedbetween parallel strips 8 on the base plate. The condenser tube 3 ispreferably removably attached to the yoke, and in the present instance Ihave shown such attachment as consisting of a plate 9 attached to theend of the condenser tube and having its upper and lower edges engagedby guides 10- in any position vertically orfhorizontally so 5;

as to bring its center of light at the optical axis of the condenserlenses. In the present instance I have mounted the said bar. be

tween the said head 18 and a plate 16 that 1s secured therein, and haveprovided the 7o said bar with a slot 17 which is adapted to engage a pinor screw 18, the handle ofthe bar extending through the slot 19 in theflange of the said bar or cover. The bar can be swung on the pin orscrew 18 as one pivot,

so that the lamp will befgive'n a motion h0ri-.-

' zontally, and by'reason ofthe' slot the bar can be raised 0,1 loweredso that the lamp given a capability of adjustment to any positionnecessai j to bring its center of light so into the desii ed position. Ithus provide a' very wide range of adjustment with a simpleconstruction.

The projecting lenses. 20 are mounted in I a tube 21 which is itselfmounted in a tube '85 22 that is carried by a preferably larger tube 23,and the latter" telescopes with the tube 24 which is removably attachedto the front side of the yoke. The form of attachment which I havechosen for illustraac tion consists of eyes 25 formed on the upper partof the front plate of the yoke andadapted to receive a wire 26 having ahandle thereon, an eye 27 formed on the said tube 24, and a guide 28 onthe lowerpart of the front face of the yoke, which is adapted to receivea flange 29 on the under side of the said tube.

In the operation of mylantern, it will be understood that the partsbeing in the posi-- ice tion shown in Fig. 1,the negative or lanternslide which is to be projected or enlarged, is

placed in the yoke being held'by the frame,

and the yoke being open at the top there is the greatest facility forplacing the slide in the right position so that it can not only bereadily inserted but can be readily inverted or replaced if it be placedby accident in the wrong position at first. By means of the adjustmentbefore described, the lam can he placed in the proper position to bringits center oi light in the axis of the condenser lenses, and by means ofthe telescopic tubes the proper focal distances canbe obtained. I

When the lantern is'to be stored or transported,the rear tubes aredisconnected from the yoke, the front tubes are likewise" disconnectedfrom the yoke, and all of said tubes can be nested together so that theyrequire a very small space. The yoke and the saddle can be disconnectedfrom the base and laid upon it, and thus the lantern, which in operationis a comparatively large, bulky structure, is, When dismantled, broughtwithin a verycompact compass.

I I claim:

1 .A lantern comprising a yoke open at the top and sides, and adapted toreceive a transparent object to be enlarged, light forming andcondensing means mounted upon and supported by one side of said yoke,and projecting means mounted upon and supported by the other side ofsaid yoke.

2. A lantern comprising a yoke having telescdpic tubes connected to iton the front and rear, said front tubes having project-.

ing lenses and said rear tubes having condensing means and a lamp, saidyoke being detachably connected to a base.

3. A lantern comprising a yoke having telescopic tubes detachablyconnected to it on the front and rear, said front tubes havingprojecting lenses and said rear tubes having condensing means and alamp, said yoke being detachably connected to a base.

4. A lantern comprising a yoke having 'telescopic tubes detachablyconnected to it on the front and rear, said front tubes havingprojecting lenses and said rear tubeshaving condensing means and a lamp,said yoke being detachably connected to a base, and a saddle adapted tosupport said rear tubes. I r

5. A lantern comprising a yoke having telescopic tubes detachablyconnected to it on the front and rear, said front tubeshaving projectinglenses and said rear tubes having condensing means and a lamp, said yokebeing detachably connected to a base, and a saddle adapted to supportsaid rear tubes, said saddle being detachably attached to said base.

6. In a projecting lantern, the combination of a yoke, telescopictubesdetachably attached to the rear of said yoke, one of said tubescontaining condensing lenses and the other of said tubes carrying alamp, and telescopic tubes attached to the front of said lantern andcarrying projecting lenses, said latter tubes being smaller in diameterthan said' former tubes, so as to be capable of being nested therein.

7. In a projecting'lanter'n, the combination of a yoke, telescopic tubesdetachably attached to the rear of said yoke, one of said tubescontaining condensing lenses and the other of said tubes carrying alamp, telescopic tubes attached to the front of said lantern andcarrying projecting lenses,'the

latter tubes being smaller in diameterthan said former tubes, so as tobe capable of being nested therein, and a base to which said yoke isdetachably connected.

8. In 'a projectinglantern, the combination of a yoke, telescopic tubesdetachably attached to the rear of said yoke, one of said tubescontaining condensing lenses and the other of said tubes carrying alamp, telescopic tubes attached to the front of said lantern andcarrying projecting lenses, the latter tubes being smaller'in diameterthan said former tubes, so as to be capable of being nested therein, abase to which said yoke is detachably connected, and a saddle for saidfirst mentioned tubes, detachably connected to said base.

9. A lantern comprising a frame adapted to receive a transparent objectto be enlarged, tubes mounted upon and supported mounted upon andsupported by-the other side'of said frame, said tubes carryingprojecting lenses.

10. A lantern comprising a frame adapted to receive a transparent objectto be enlarged, tubes mounted uponand supported by one side of saidframe, said tubes carrying a light and condensing lenses, and tubes.

mounted upon and supported by the other side of said frame, said tubescarrying projecting lenses, said latter tubes being smaller in diameterthan said former tubes, so as to be capable of being nested therein.

In testimony that I claim the foregoing I have hereunto set my hand.

' FRANK W. MINOR. Witnesses;

NORMAN L. FLIPPEN, Bnssm LAMK'IN.

